Search for the isospin violating decay Y(4260)→J/ψηπ$^0$

M Ablikim,H X Yang,H L Ren,Tanveer Hussain,H W Yu,T Held, G Varner,F H Liu, T Li,W X Gong,Z Y He,X Tang,W Shan,Y Hu,Q A Malik,Ling Zhao,J F Qiu,Shengwei Zhu,J Z Zhao,R A Briere, P F Duan,A Zhemchugov,K Goetzen,J S Yu,S L Olsen,Hsou Mei Hu,M Kavatsyuk,K Peters,I Tapan,Y G Xie,Y N Pu,Y F Wang,Z Y Deng, S A Cetin,H P Peng, Maoyin Wang,S Pacetti,Bing Zheng,Z G Zhao,Y J Mao, I Boyko,S X Du,H L Dai,M Destefanis,Garng M Huang,H P Cheng,Tao Luo,Martin Albrecht,Y P Guo,Y B Zhao,P L Wang, Tianfei Ma,A Kupsc,Q Gao,H Y Zhang, K Y Liu,C C Zhang,B L Wang,Yong Huang,M N Achasov,D X Lin,Thorsten Weber, Chong He Li,K Moriya,U Wiedner,Y J Mo, Y H Guan, T Hu,X X Liu,X F Wang,Chao Dong,X T Huang, Z B Li,Z Jiao, L Zotti,H P Huang,E Fioravanti,J C Li,J L Ping,R E Mitchell,G Rong,D Bettoni,Zhi Hui Zhang, Lei Li, S Marcello,H Y Sheng,D M Li, Z Ning, Jan B C Pettersson, Z Haddadi,A Calcaterra,T C Zhao,S S Fang,F C Ma,I Uman, S Sosio,A Q Guo, B J Liu, I Garzia, C Z Yuan,L G Xia,Q P Ji,W G Li,L Q Qin,H H Liu, Q An,Li Zhou,A G Denig, J S Lange,X Y Song, W J Zheng, Sangjun Han, J S Huang, A Zallo,C X Yu,A Hafner,D Y Wang, C D Fu,O Cakir,K L He, J Y Liu, E H Thorndike,J P Zheng, M Tiemens, Mingwang Shao,Z A Zhu,Ming Qi,Z A Liu,S P Wen,G F Cao,K Schoenning, O Bondarenko,O Albayrak,X Y Shen,J Z Zhang, Y B Liu,G F Xu,C F Qiao,X R Chen,Z Y Wang,Y T Gu, Q W Zhao,J C Chen,H B Li,J B Jiao,Y Nefedov,F E Maas,A Amoroso, L Fava,F F An,G Cibinetto,H J Lu,X Y Niu,H Liang,Y H Zheng,L H Wu,Z T Sun, D W Bennett,B X Yu,Z H Qin,F Bianchi,S J Zhao,Yanping Ding,G Zhao,Xiong Cai, A Dbeyssi, C L Luo,R Baldini Ferroli, L W Jiang,Qun Ouyang, C P Shen, Linghua Yan, R Kliemt,P R Li, M X Luo, C F Redmer,Y S Zhu,Qin Liu,M Pelizaeus,X C Ai,Y P Lu,H L Ma,Jun Fang,H Ye,N Qin, X L Luo, L D Liu,L Y Dong, J B Wei, B C Ke,B Zhong,Z J Xiao, R Poling, S B Liu,J Min,W Gradl, H Y Chen,T J Min, A V Sarantsev,Xusheng Fang, P L Liu,L B Guo,W C Yan, B S Zou,X Y Ma,C Q Feng, X S Jiang,X L Ji, H Loehner,Yong Xia,H Muramatsu,X Y Gao,Guo Li,C J Tang,C X Liu,M Ullrich,E Boger,M Maggiora, Jianjin Dong,Z P Mao, A Yuncu, Y H Yan,Dong Xiao, J F Chang,W Kuhn,M L Chen,Sijin Qian, M Ripka, Chaoying Hu, Y B Chen,F A Harris,Xi Peng Xu,S G Wang, Z Gao,K Wang,J F Sun,G Felici,Li Yang,Y Z Sun, C Geng,S Nisar, J H Yin,C Morales Morales,S S Sun, M Bertani, K J Zhu, X Q Hao, J Z Bai,M H Ye,Q M Ma,K H Rashid,X C Lou,V Santoro,Q J Wang,D P Jin,N Kalantarnayestanaki,L L Ma,M G Zhao, A Julin,X S Kang,D V Dedovich, F Nerling,J M Bian,Kai Li, D Croninhennessy,Yanqing Zeng,D H Wei,M H Gu, J G Messchendorp,R G Ping,J Z Fan,N Yu Muchnoi,D H Zhang,J H Zou,Maria S Greco,X N Li,Y F Liang,G R Liao,P Weidenkaff,X D Ruan, Zhenkun Wu,J V Bennett, Q J Xu, Wenjian Wang,P Patteri, X R Zhou,I Denysenko, Shun Hua Zhang, Thomas Johansson,W L Yuan,Yongsheng Gao,M Kornicer,C Leng,I B Nikolaev,Guoming Chen,W M Song,P Larin,S Schumann,M Y Dong, Maoshui Lv,Wei Lai,X H Mo,Lei Zhang,X S Qin,J F Hu,Y Qin, B Kloss,D Toth,Lisa L Wang,S Spataro,Y Fang,S J Chen,X K Chu,L Xu, M Wolke,M Savrie, S L Niu,X Y Zhang,Feng Li, Y Ban,B X Zhang,J P Dai,Y H Zhang, O B Kolcu,J G Lu, P X Shen,A A Zafar, B Kopf,J Zhuang,Kang Zhang,S Jin,M Lara,Yuan Yuan,Q L Xiu,Y X Yang, Z L Hou, R Q Lu, G A Chelkov,Hui Cai,D Ambrose, F Feldbauer,F De Mori,M Fritsch,X L Zhu,Y K Heng,G X Sun, X R Lyu,Y L Han,S Ma

PHYSICAL REVIEW D（2015）

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摘要

Using data samples collected at center-of-mass energies of root s = 4.009, 4.226, 4.257, 4.358, 4.416, and 4.599 GeV with the BESIII detector operating at the BEPCII storage ring, we search for the isospin violating decay Y(4260)-> J/psi eta pi(0). No signal is observed, and upper limits on the cross section sigma(e(+)e(-) -> J/psi eta pi(0)) at the 90% confidence level are determined to be 3.6, 1.7, 2.4, 1.4, 0.9, and 1.9 pb, respectively.

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positron,electron,statistical analysis

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